High pressure hose fitting



. gig 4,236

March l6 1943. c. w. MOTT HIGH PRESSURE HOSE FITTING Filed Dec. 29, 1939 Fa-1&5

I [NI M2 012,

CARL Wflon' "BY 'QMO Patented Mar. 16, 1943 PATENT OFFICE Q l I A men rsess tfifi srmmc. A

national Harvester New Jerseytings. t

It is still another'object .of the invention to provide a method of assemblingahose fitting such as used with hose material adapted to carry fluids at high pressure.

, It is still a further object of the invention to provide a fitting of the high pressure type that can be readily disassembled.

According to the present invention, the fitting includes an inner part having a nipple portion.

adapted to be seated within the end of the hose and a second or sleeve part adapted to surround the nipple portion and hose. For the clinching of the second part about the hose, there is provided two mold parts adapted to fit over the second part and to cause folding of this second part to obtain a radially extending flange which extends throughout the length of the second part. For the producing of this flange, and of the folding of the surplus portions of the second part, the molds are provided with recess portions, which upon adjoining one to the other during the pressing operation, form a pocket into which the surplus portions flow. For a better understanding of the invention reference may be had to the following description taken in connection with the accompanying drawing, in which: Figure 1 shows the inner end and outer parts in position ready to be assembled to the end of the hose;

Figure 2 illustrates theshaping of the mate rial at the beginning of the clinching operation by the mold parts;

Figure 3 is a similar view to Figure 2, but showingin section the'finished shaping of the outer part when the mold parts have been brought into contact with each other; 7

Figure 4 is a sectional view taken along the lines 4--4 of the mold parts .and of the finished fittings; and,

Figure 5 is an elevational view of the finished fitting removed from the mold parts.

Referring now to Figure 1, there is shown the parts about ready to be assembled to the end of a flexible hose.

The inner or coupling part designated at It Company, a corporation of.

' mutantbecam 1939, Serial No. 311,650

2' 3'Clairns. CL 28 5- 8 i)' I 'This .invention relates to hose ,flttings and to a method for assembling the same to the-end of has a threaded portion II and a nipple portion l2. i This nipple portion 12 has corrugations I3 for the purpose of gripping the, internal portions oi the hose. The nipple portion I2 is inserted into the ;hose material l4 which iso'rdin'arily rubber.

About the hose H and the 'nipple portion l2,

there is slid into position .an outer sleeve or'sec-" This sleeve part [5 hasinternal grooves I6 for. the purpose of gripping theouter portions of the hose material when the i sleeve isond' part, l5.

shaped to provide the finished Lfitting. The sleeve I5 is of suflicient diameter to slide readily along the hose material after the hose has been of the inner part III.

On the inner part It), there is provided a radially extending flange ll with which the groove,

pushed into position about the nipple portion I2 IS, on the end of the sleeve, is registered when the fitting is ready for the clinching operation. 'I'hefiange I I, is only of sufiicient diameter that the same will permit the reducing of the diameter of the sleeve part about the same whereby the outer circumferential portions thereof will lie fully within the groove liafter the clinching operation. This flange I1 will prevent any longitudinal movement of the sleeve I5 after the fitting parts may have in time broken away from the flexible orrubber material of the hose i4. After the fitting parts Ill and I5 are loosely assembled, they are placed in a bottom part l8 of a mold indicated generally at IS. The mold part I8 is recessed to provide a half cylinder shape of such diameter as the fitting is desired to have after its clinching operation. This recess is indicated at 20. Along the sides of the recess 20 and extending the length thereof, there is pro- 4 'vided relief recesses 2| and 22.

Forming also a part of the mold I9 is an upper part 23 having a similar recess to that of the bottom part It and has also side recesses 24 and 25.

As the mold parts 23 and I8 come together, as r lieved, the mold parts will be opened by means of springs 33 and 34 which were compressed during the pressing operation. This will permit prise of portions of the sleeve part l5.

ready removal or an assembled fitting 3!, such as shown in Figure 5. This fitting will coman inner part having a nipple portion extending into the end of the hose and a reduced sleeve part clinchingly surrounding the hose and nipple portion. This sleeve part will have radially and outwardly extending flanges formed of portions ofthe sleeve part folded back on themselves, the flanges extending the entire length of the sleeve.

It should be noted operation the groove I6 is fitted about the flange H, as viewed in Figure 4; Also, that the flexible material of the hose is well seated within the corrugations it of the nipple i2- and also within the grooves ii of the sleeve part I.

Should one ever desire to remove the sleeve part l5, and the inner part l0, it would only be necessary to file along the edge of the fiange portions a sufilcient amount to permit division It should now be apparent been provided 'a simple high-pressure hose fitting and a simple method of assembling a hose fitting and one which is particularly adaptable for the assemblingof fittings to hose material carrying fluids at high pressures.

While various changes may be made in the means 'for forming the outer sleevepart I5, it

shall be un'derstoodthat these other forms shall be vwit nthe spirit and scope of the present invention as defined in the appended claims.

that after the clinchin that there has What is claimed is: I

1. In combination, a hose, a fitting having a portion en aging the inside or a portion 0! the hose, a sleeve engaging the outside of the said portion of the hose, said portion of the hose being under a high state of compression by virtue of engagement thereoi by the fitting and the sleeve. the sleeve having an external told extending irom one end to the other, whereby cutting through of the fold permits easy removal of the sleeve and the fitting from the hose. 2.'In combina'tiom'a hose, a fitting having a V portion engaging the inside of a portion oi. the 5 hose. a sleeve engaging the outside of the said portion of the hose. said portion of the hose being under a high state of compression by virtue "of engagement thereof by the fitting and the sleeve, the sleeve having a pair of diametrically opposed iolds extending from one end to the other,whereby cutting-through oi'the folds per mits easy removal of the sleeve and the fitting from the hose. 3. In combination, a hose, and a ing the outside of a portion of the hose, said portion of the hose being under a high state oi=compression by virtue of engagement thereof, by the sleeve, the sleeve having an external told extending from one end to the other, whereby cutting through the ioldpermits easy removal 01' the sleeve from the hose;

I CARLW.MO'I'I.

sleeve engag- 

